CN219181495U - Signal control circuit and signal control system - Google Patents
Signal control circuit and signal control system Download PDFInfo
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- CN219181495U CN219181495U CN202223203494.2U CN202223203494U CN219181495U CN 219181495 U CN219181495 U CN 219181495U CN 202223203494 U CN202223203494 U CN 202223203494U CN 219181495 U CN219181495 U CN 219181495U
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Abstract
The utility model discloses a signal control circuit and a signal control system, and relates to the technical field of signal control. The signal control circuit comprises a signal input module, a delay module, a comparison module and a switch module. The signal input module provides an initial control signal, and the delay module receives the initial control signal. The delay module sets delay parameters and performs delay operation according to the initial control signals and the delay parameters so as to generate target control signals. The comparison module sets a preset voltage according to the power supply signal and generates a switch control signal according to the target control signal and the preset voltage. The switch module switches the conducting state according to the switch control module, so that the level state of the input end of the equipment to be controlled is controlled, and the control of the equipment to be controlled is realized. The signal control circuit of the embodiment can reduce the production cost of the signal control circuit under the conditions of adopting basic electronic components and guaranteeing the delay precision of equipment.
Description
Technical Field
The present utility model relates to the field of signal control technologies, and in particular, to a signal control circuit and a signal control system.
Background
Currently, in order to control an electronic device with a delay requirement, a signal control circuit with a delay function is required.
In the related art, the signal control circuit generally sets a program in a control chip to accurately calculate a delay time, thereby realizing delay control of the electronic device. However, at least one control chip is additionally provided in the above manner, which results in an increase in the production cost of the signal control circuit.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a signal control circuit which can reduce the production cost of the signal control circuit.
The utility model also provides a signal control system with the signal control circuit.
A signal control circuit according to an embodiment of the first aspect of the present utility model includes:
the signal input module is used for providing an initial control signal;
the delay module is used for being electrically connected with the signal input module, setting delay parameters and generating target control signals according to the initial control signals and the delay parameters;
the comparison module is used for being electrically connected with an external power supply and the delay module respectively; the external power supply is used for providing a power supply signal, the comparison module is used for setting preset voltage according to the power supply signal, and the comparison module is used for generating a switch control signal according to the target control signal and the preset voltage;
the switch module is used for being respectively and electrically connected with the comparison module and the equipment to be controlled, and is used for switching the conducting state according to the switch control signal so as to switch the level state of the input end of the equipment to be controlled.
The signal control circuit provided by the embodiment of the utility model has at least the following beneficial effects: the signal input module provides an initial control signal, and the delay module receives the initial control signal. The delay module sets delay parameters and performs delay operation according to the initial control signals and the delay parameters so as to generate target control signals. The comparison module sets a preset voltage according to the power supply signal and generates a switch control signal according to the target control signal and the preset voltage. The switch module switches the conducting state according to the switch control module, so that the level state of the input end of the equipment to be controlled is controlled, and the control of the equipment to be controlled is realized. The signal control circuit of the embodiment can reduce the production cost of the signal control circuit under the conditions of adopting basic electronic components and guaranteeing the delay precision of equipment.
According to some embodiments of the utility model, the delay module comprises:
one end of the first resistor is used for being electrically connected with the signal input module, and the other end of the first resistor is used for being electrically connected with the comparison module;
and one end of the first capacitor is electrically connected with the first resistor and the connecting node of the comparison module, and the other end of the first capacitor is grounded.
According to some embodiments of the utility model, the comparison module comprises:
the first input port of the comparator is used for being electrically connected with the connecting node of the first resistor and the first capacitor, the output port of the comparator is used for being electrically connected with the switch module, and the power end of the comparator is used for being electrically connected with the external power supply;
one end of the second resistor is used for being electrically connected with the external power supply, and the other end of the second resistor is used for being electrically connected with a second input port of the comparator;
one end of the third resistor is used for being electrically connected with the second input port of the comparator and the connecting node of the second resistor, and the other end of the third resistor is grounded;
the comparator is used for setting the preset voltage according to the power supply signal, the resistance value of the second resistor and the resistance value of the third resistor, and the comparator is used for generating the switch control signal according to the target control signal and the preset voltage.
According to some embodiments of the utility model, the switch module comprises:
the grid electrode of the voltage control flow element is electrically connected with the output port of the comparator, the drain electrode of the voltage control flow element is electrically connected with the equipment to be controlled, the source electrode of the voltage control flow element is grounded, and the voltage control flow element is used for switching the conducting state according to the switch control signal.
According to some embodiments of the utility model, the voltage-controlled current element comprises any one of a triode and a field effect transistor.
According to some embodiments of the utility model, the switch module further comprises:
one end of the fourth resistor is used for being electrically connected with the output port of the comparator, and the other end of the fourth resistor is used for being electrically connected with the grid electrode of the voltage-controlled current element;
and one end of the fifth resistor is electrically connected with the connection node of the fourth resistor and the voltage-controlled current element, and the other end of the fifth resistor is grounded.
According to some embodiments of the utility model, the signal control circuit further comprises:
the anode of the diode is used for being electrically connected with the connecting node of the delay module and the comparing module, and the cathode of the diode is used for being electrically connected with the signal input module.
A signal control system according to an embodiment of the second aspect of the present utility model includes:
the signal control circuit according to the embodiment of the above first aspect of the present utility model.
The signal control system according to the embodiment of the utility model has at least the following beneficial effects: the signal control system adopts the signal control circuit, so that the production cost of the signal control circuit is reduced under the conditions that basic electronic components are adopted and the delay precision of equipment is ensured.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a block diagram of a signal control circuit according to an embodiment of the present utility model;
fig. 2 is a schematic circuit diagram of an embodiment of the signal control circuit of the present utility model.
Reference numerals:
the device comprises a signal input module 100, a delay module 200, a comparison module 300, a switch module 400 and equipment to be controlled 500.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As shown in fig. 1, an embodiment of the present utility model provides a signal control circuit, including: a signal input module 100, a delay module 200, a comparison module 300 and a switch module 400. The signal input module 100 is used for providing an initial control signal; the delay module 200 is used for being electrically connected with the signal input module 100, the delay module 200 is used for setting delay parameters, and the delay module 200 is used for generating a target control signal according to the initial control signal and the delay parameters; the comparison module 300 is used for being respectively and electrically connected with an external power supply and the delay module 200, the external power supply VCC is used for providing a power supply signal, the comparison module 300 is used for setting a preset voltage according to the power supply signal, and the comparison module 300 is used for generating a switch control signal according to a target control signal and the preset voltage; the switch module 400 is configured to be electrically connected to the comparing module 300 and the device to be controlled, and the switch module 400 is configured to switch the on state according to the switch control signal, so as to switch the level state of the input end of the device to be controlled.
Specifically, the signal input module 100, the delay module 200, the comparison module 300, and the switch module 400 are all modules composed of basic electronic components. The signal input module 100 may include a square wave signal source or a direct current signal source, and the signal input module 100 is configured to provide an initial control signal. The delay module 200 is respectively and electrically connected with the signal input module 100 and the comparison module 300, the comparison module 300 is also respectively and electrically connected with an external power supply and the switch module 400, and the switch module 400 is electrically connected with the input end of the equipment to be controlled. The delay module 200 sets delay parameters in advance, and the comparison module 300 sets a preset voltage according to a power supply signal of an external power supply. The delay module 200 performs delay operation according to delay parameters after receiving the initial control signal, and generates a target control signal in real time. After receiving the target control signal, the comparison module 300 compares the voltage of the target control signal with a preset voltage. The signal control circuit sets delay parameters through the delay module 200 and the preset voltage through the comparison module 300, so that the accuracy of delay control is ensured.
When the voltage of the target control signal is smaller than or equal to the preset voltage, the comparison module 300 generates a high-level switch control signal to control the switch module 400 to be turned off, so that the input end of the equipment to be controlled is controlled to be in a high-level state, and the equipment to be controlled does not perform working state switching operation at the moment; when the voltage of the target control signal is greater than the preset voltage, the comparison module 300 generates a low-level switch control signal to control the switch module 400 to be turned on, so as to control the input end of the equipment to be controlled to be in a low-level state, and further realize the switching of the working state of the equipment to be controlled.
According to the signal control circuit of the embodiment of the present utility model, the signal input module 100 provides an initial control signal, and the delay module 200 receives the initial control signal. The delay module 200 sets delay parameters, and performs delay operation according to the initial control signal and the delay parameters to generate a target control signal. The comparison module 300 sets a preset voltage according to the power supply signal, and generates a switch control signal according to the target control signal and the preset voltage. The switch module 400 switches the on state according to the switch control module, so as to control the level state of the input end of the equipment to be controlled, thereby realizing the control of the equipment to be controlled. The signal control circuit of the embodiment can reduce the production cost of the signal control circuit under the conditions of adopting basic electronic components and guaranteeing the delay precision of equipment.
As shown in fig. 2, in some embodiments of the utility model, the delay module 200 includes: a first resistor R1 and a first capacitor C1. One end of the first resistor R1 is electrically connected to the signal input module 100, and the other end of the first resistor R1 is electrically connected to the comparison module 300; one end of the first capacitor C1 is electrically connected to the connection node of the first resistor R1 and the comparison module 300, and the other end of the first capacitor C1 is grounded.
Specifically, the signal input module 100 is electrically connected to one end of the first resistor R1, the other end of the first resistor R1 is connected to one end of the first capacitor C1 in series, the other end of the first capacitor C1 is grounded, and the connection node of the first resistor R1 and the first capacitor C1 is electrically connected to the comparison module 300. After the signal input module 100 generates the initial control signal, the initial control signal charges the first capacitor C1 through the first resistor R1. By presetting the resistance value of the first resistor R1 as R 1 The capacitance value of the first capacitor C1 is C 1 The delay parameter tau of the delay module 200 can be obtained 0 The delay parameter satisfies: τ 0 ＝R 1 *C 1 . Referring to fig. 2, at the moment of receiving the initial control signal, the voltage of the connection node a between the first capacitor C1 and the first resistor R1 is 0, that is, the voltage of the target control signal generated by the delay module 200 is 0. At this time, the voltage of the target control signal is less than or equal to the preset voltage, so the comparison module 300 generates a high-level switch control signal to control the switch module 400 to be turned off. Thereafter, the initial control signal continues to charge the first capacitor C1, so that the voltage of the connection node a between the first capacitor C1 and the first resistor R1 gradually increases, i.e. the voltage of the target control signal gradually increases, whenWhen the voltage of the target control signal increases to be greater than the preset voltage, the comparison module 300 generates a low-level switch control signal to control the switch module 400 to be turned on.
As shown in fig. 2, in some embodiments of the utility model, the comparison module 300 includes: comparator U1, second resistor R2, third resistor R3. The first input port of the comparator U1 is used for being electrically connected with a connection node of the first resistor R1 and the first capacitor C1, the output port of the comparator U1 is used for being electrically connected with the switch module 400, and the power end of the comparator U1 is used for being electrically connected with an external power supply VCC; one end of the second resistor R2 is used for being electrically connected with an external power supply VCC, and the other end of the second resistor R2 is used for being electrically connected with a second input port of the comparator U1; one end of the third resistor R3 is used for being electrically connected with a second input port of the comparator U1 and a connecting node of the second resistor R2, and the other end of the third resistor R3 is grounded; the comparator U1 is used for setting a preset voltage according to the power supply signal, the resistance value of the second resistor R2 and the resistance value of the third resistor R3, and the comparator U1 is used for generating a switch control signal according to the target control signal and the preset voltage.
Specifically, one end of the second resistor R2 is electrically connected to the external power source VCC, the other end of the second resistor R2 is connected in series with one end of the third resistor R3, and the other end of the third resistor R3 is grounded. The first input port of the comparator U1 is electrically connected with the connection node of the first resistor R1 and the first capacitor C1, the second input port of the comparator U1 is electrically connected with the connection node of the second resistor R2 and the third resistor R3, the output port of the comparator U1 is electrically connected with the switch module 400, and the power end of the comparator U1 is electrically connected with the external power supply VCC. Wherein an external power supply VCC provides a power supply signal. Referring to fig. 2, the voltage of the node B connected between the second resistor R2 and the third resistor R3 can be obtained according to the voltage value of the power supply signal, the resistance value of the second resistor R2, and the resistance value of the third resistor R3, for example, assuming that the voltage provided by the external power source VCC is vcc=3v, the resistance value R of the second resistor R2 2 Resistance value R of the third resistor R3 of =1kΩ 3 =2kΩ, then voltage vb=vcc×r at point B 3 /(R 2 +R 3 ) =2v. The comparator U1 sets the voltage of the second input port (i.e. the voltage at the point B in FIG. 2) to a predetermined voltage, when the target is controlledWhen the voltage of the control signal is smaller than or equal to the preset voltage, the comparator U1 outputs a high-level switch control signal from the output port to control the switch module 400 to be turned off; when the voltage of the target control signal is greater than the preset voltage, the comparator U1 outputs a low-level switch control signal from the output port to control the switch module 400 to be turned on, so as to control the input end of the device 500 to be controlled to be in a low-level state, and further control the working state of the device 500 to be controlled.
Referring to FIG. 2, for example, the voltage value V of the initial control signal is set 0 =15v, voltage value va=0v of node a at the moment when the first capacitor C1 receives the initial control signal, voltage value vb=7.5v of node B, capacitance value C of the first capacitor C1 1 =10uf, resistance value R of first resistor R1 1 =20kΩ. The time τ required for the switching control signal generated by the comparator U1 to switch from the high-level state to the low-level state can be obtained by the following equation (1):
τ＝R 1 *C 1 *Ln[(V 0 -Va)/(V 0 -Vb)]............. It is a new type (1)
The V is set up above 0 ＝15V、Va＝0V、Vb＝7.5V、C 1 ＝10uF、R 1 By substituting =20kΩ into the above equation (1), τ=138.6 ms can be obtained. That is, after the signal input module 100 generates the initial control signal and the time τ=138.6 ms elapses, the switch control signal generated by the comparator U1 is switched from the high level state to the low level state, and at this time, the switch module 400 is turned on, so that the input end of the device 500 to be controlled is switched to the low level state, thereby realizing the control of the working state of the device 500 to be controlled.
As shown in fig. 2, in some embodiments of the utility model, the switch module 400 includes a voltage controlled flow element Q1. The grid electrode of the voltage-controlled current element Q1 is used for being electrically connected with the output port of the comparator U1, the drain electrode of the voltage-controlled current element Q1 is used for being electrically connected with the equipment 500 to be controlled, the source electrode of the voltage-controlled current element Q1 is grounded, and the voltage-controlled current element Q1 is used for switching on states according to a switch control signal.
Specifically, the gate of the voltage-controlled current element Q1 is electrically connected to the output port of the comparator U1, so as to receive the switch control signal generated by the comparator U1. The drain electrode of the voltage-controlled current element Q1 is electrically connected with the input end of the equipment 500 to be controlled, and the source electrode of the voltage-controlled current element Q1 is grounded. When the comparator U1 outputs a high-level switch control signal, the gate of the voltage-controlled current element Q1 is in a high-level state, so that the voltage-controlled current element Q1 is turned off, and the input end of the device 500 to be controlled is in a high-level state, and the working state of the device 500 to be controlled is not changed. When the switch control signal output by the comparator U1 is switched to a low level signal, the gate level of the voltage-controlled current element Q1 is set low, so that the voltage-controlled current element Q1 is turned on, and the input terminal level of the device 500 to be controlled is set low, and at this time, the device 500 to be controlled switches the working state according to the low level signal.
In some embodiments of the present utility model, the voltage-controlled current element Q1 includes any one of a triode and a field effect transistor.
Specifically, the voltage-controlled current element Q1 may be selected as a triode or a field effect transistor. For example, referring to fig. 2, the voltage controlled flow element Q1 may be selected to be a field effect transistor. It can be appreciated that the type of the pressure control flow element Q1 can be specifically selected adaptively according to actual requirements.
As shown in fig. 2, in some embodiments of the utility model, the switch module 400 further includes: fourth resistor R4, fifth resistor R5. One end of the fourth resistor R4 is used for being electrically connected with the output port of the comparator U1, and the other end of the fourth resistor R4 is used for being electrically connected with the grid electrode of the voltage-controlled current element Q1; one end of the fifth resistor R5 is electrically connected to the connection node between the fourth resistor R4 and the voltage-controlled current element Q1, and the other end of the fifth resistor R5 is grounded.
Specifically, one end of the fourth resistor R4 is electrically connected to the output port of the comparator U1, the other end of the fourth resistor R4 is connected in series with one end of the fifth resistor R5, and the other end of the fifth resistor R5 is grounded. The fourth resistor R4 can prevent other components from being broken down and damaged due to the fact that the on and off speeds of the voltage-controlled current element Q1 are too fast. The fifth resistor R5 is used for discharging static electricity generated by the gate and the source of the voltage-controlled current element Q1 to prevent the voltage-controlled current element Q1 from being broken down to cause damage.
As shown in fig. 2, in some embodiments of the present utility model, the signal control circuit further includes a diode D1. The anode of the diode D1 is electrically connected to the connection node of the delay module 200 and the comparison module 300, and the cathode of the diode D1 is electrically connected to the signal input module 100.
Specifically, the diode D1 is connected in parallel with the first resistor R1, the cathode of the diode D1 is electrically connected with the signal input module 100, and the anode of the diode D1 is electrically connected with the connection node between the first resistor R1 and the comparator U1. The diode D1 is configured to provide a discharge line for the first capacitor C1, so as to achieve the effect of rapidly discharging the first capacitor C1 when the initial control signal is unstable. It can be appreciated that the model of the diode D1 can be adaptively selected according to actual needs.
The embodiment of the utility model also provides a signal control system which comprises the signal control circuit described in any embodiment.
It can be seen that the content in the above-mentioned signal control circuit embodiment is applicable to the embodiment of the present signal control system, and the functions specifically implemented by the embodiment of the present signal control system are the same as those of the above-mentioned signal control circuit embodiment, and the beneficial effects achieved by the embodiment of the present signal control circuit are the same as those achieved by the embodiment of the above-mentioned signal control circuit.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.
Claims (8)
1. A signal control circuit, comprising:
the signal input module is used for providing an initial control signal;
the delay module is used for being electrically connected with the signal input module, setting delay parameters and generating target control signals according to the initial control signals and the delay parameters;
the comparison module is used for being electrically connected with an external power supply and the delay module respectively; the external power supply is used for providing a power supply signal, the comparison module is used for setting preset voltage according to the power supply signal, and the comparison module is used for generating a switch control signal according to the target control signal and the preset voltage;
the switch module is used for being respectively and electrically connected with the comparison module and the equipment to be controlled, and is used for switching the conducting state according to the switch control signal so as to switch the level state of the input end of the equipment to be controlled.
2. The signal control circuit of claim 1, wherein the delay module comprises:
one end of the first resistor is used for being electrically connected with the signal input module, and the other end of the first resistor is used for being electrically connected with the comparison module;
and one end of the first capacitor is electrically connected with the first resistor and the connecting node of the comparison module, and the other end of the first capacitor is grounded.
3. The signal control circuit of claim 2, wherein the comparison module comprises:
the first input port of the comparator is used for being electrically connected with the connecting node of the first resistor and the first capacitor, the output port of the comparator is used for being electrically connected with the switch module, and the power end of the comparator is used for being electrically connected with the external power supply;
one end of the second resistor is used for being electrically connected with the external power supply, and the other end of the second resistor is used for being electrically connected with a second input port of the comparator;
one end of the third resistor is used for being electrically connected with the second input port of the comparator and the connecting node of the second resistor, and the other end of the third resistor is grounded;
the comparator is used for setting the preset voltage according to the power supply signal, the resistance value of the second resistor and the resistance value of the third resistor, and the comparator is used for generating the switch control signal according to the target control signal and the preset voltage.
4. A signal control circuit as claimed in claim 3, wherein the switch module comprises:
the grid electrode of the voltage control flow element is electrically connected with the output port of the comparator, the drain electrode of the voltage control flow element is electrically connected with the equipment to be controlled, the source electrode of the voltage control flow element is grounded, and the voltage control flow element is used for switching the conducting state according to the switch control signal.
5. The signal control circuit of claim 4, wherein the voltage-controlled current element comprises any one of a triode and a field effect transistor.
6. The signal control circuit of claim 5, wherein the switch module further comprises:
one end of the fourth resistor is used for being electrically connected with the output port of the comparator, and the other end of the fourth resistor is used for being electrically connected with the grid electrode of the voltage-controlled current element;
and one end of the fifth resistor is electrically connected with the connection node of the fourth resistor and the voltage-controlled current element, and the other end of the fifth resistor is grounded.
7. The signal control circuit according to any one of claims 1 to 6, characterized by further comprising:
the anode of the diode is used for being electrically connected with the connecting node of the delay module and the comparing module, and the cathode of the diode is used for being electrically connected with the signal input module.
8. A signal control system, comprising:
a signal control circuit as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202223203494.2U CN219181495U (en) | 2022-11-28 | 2022-11-28 | Signal control circuit and signal control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223203494.2U CN219181495U (en) | 2022-11-28 | 2022-11-28 | Signal control circuit and signal control system |
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| CN219181495U true CN219181495U (en) | 2023-06-13 |
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| CN202223203494.2U Active CN219181495U (en) | 2022-11-28 | 2022-11-28 | Signal control circuit and signal control system |
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